Multifunctional materials are defined as materials that have several interesting and applicable properties. For example, a material can both be a superconductor as well as an insulator, it is just a question of which temperature range the material is operated in. In the same way, the LiFePO\(_4\)  (LFPO) compound is both a cathode material for rechargeable batteries [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]} in a room temperature regime, while displaying interesting magnetic properties at low temperatures [8]}, [4]}, [7]}, [11]}, [12]}, [13]}. Originally, the great interest for LFPO is founded in its electrochemical properties, where it is of high interest as a safe and highly stable cathode material in low current conditions (c.f. other Li-ion battery cathode materials) [14]}. Further, LFPO is a 'Co-free' cathode material where the replacement of Co with Fe is very favorable due to its much higher natural abundance (Fe:Co = 2500:1). Consequently, both lower price as well as less friction on the geopolitical level makes LFPO attractive for industrial scale energy applications.
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